Coating mixture



UNITED "STATES VPAT.E.NTVT OFFICE.

.crm'nrins FELL, or 'nnxma'i 015110, asemea NATIONAL new sour-m, on

' rrrsnuaon, PENNSYLVANIA, A 'COBIE'ORATION'QF NEW :rnzasnvj coarme m rxrunn'.

iiirawing.

;"ful Improvements in Coating Mixtures, of

' which the following is a specification.

Still .further objects will i parent as the invention, becomes more Kdescribed-hereinafter.

" ingredients are employe Another object of thein'vention is topro-Y H tillation of coal.

' has been proved togive very s'at1sfactoryjre-"- This invention relates to fluid coatings applied as a protective coating to prevent oxidation orrusting of metal surfaces and, while not limited to such use,'more particularlyrelates to fluid coatings for metal pipes or tubes and is adapted to be applied after vthe pipes or tubes 'are completed, as a protective covering to the surface of welded pipes and tubes to prevent oxidation or rusting of the surfaces of the materials while in storage and during transportation from the place of manufacture to a place of'use.

One object of my invention is the provision of 'a fluid coating of novel composit1on in which'cheap and easily obtainable vide a protective coating which has su'fii-- cient fluidity to be applied in a rapid, cheap, and economical mannenand whichis adapted to quickly dry on the coated metal'surfaces after application. l

V A still furthe'r'object of: the invention is to 'provide'a coating fluid of improved composition which has) the required degree of fluidity and isadaptedto be sprayed upon the surfaces being coated; Y

ma a

My invention broadlyconsists iii-a novel composition composed of boiled'linseedjo l A spee e mtle ofsuchmixtjnr,

suits, is .boiledf-ff-linseed oil, petroleum naphtha, andahydro'carbon oiljcontaiDing benzol and its homologues such as. t l xylol, etc, The. materials and proportions used in makingi such composition are'-'- Hydrocarbon. oil of the' al' o jmatic group (contain ng v spe ia ti r Letters am.

[may

- faces. t

advantages of my invention will be apparent tothose skilled in the art. The

per" cent; 5

reamed Nova 9, 192i);

Application nanimate-3,1920. Seria1 No. 853,529.-"

'Infl all cases at' least. 50' per cent; of the henzol containing oil should be used in making themixture, and in some cases it will be found of advantage to add about f3'i'per cent; ofjapandrier to the linseed oil, in making the composition. It is found that the amounts of the various materials used"; be readily varied within the following proportions.

Boiled linseed oil (either with or without japan drier '12 to. 18 per cent. Petroleum naphtha 8 to 12 per cent. Hydrocarbon. oil of the aromatic group and f containing benzol and its homologues ,70 to 80 per cent;-

In making thecomposition the japan drier, when used, will be added to and thoroughly mixed with the linseed oil. The petroleum'naphtha will then be mixed with the linseed oil after which the hydrocarbon oil will be added to the mixture of linseed oil and naphtha. The hydrocarbon oil being a thinner willbe added in quantities sufiicient to give the fluidity required for spraying-the mixture in applying 1t.

In applying the composition to metal surfaces such as pipes and tubesit preferably will be sprayed thereon, so as to cover the surfaces of the treated materials with a thin protective coating which, after becoming dry ejfectively prevents rusting of the coated materials, even when exposed to the elements for long time intervals.

It is found whenthe mixture is applied the hydrocarbon oils and naphtha evaporate quickly and the linseed oil dries, leaving a residue-which forms a thin, hard protective covering on the coated surfaces which effectively prevents rusting ofthe coated survarious materials used in making my improved, spraying mlxture or composltion of matter are readily obtained, are cheap and is readily mix, while after being applied the mixture dries rapidly and formsa'protection against rusting which is equal to or better than more expensive compositions used heretofore for that purpose.

4. A metal surface protecting mixture inaaeoa consisting essentially of per cent. lin- 15 seed oil, 10 per cent. petroleum naphtha, and 7 5 per cent. of a hydrocarbon oil of the aromatic group.

5. A metal surface protecting mixture consisting of from 12 to 18 per cent. lin- 20 seed oil, 3 per cent. japan drier, from 8 to 12 per cent. petroleum naphtha, and from to per cent. of a hydrocarbon oil of the aromatic group.

In testimony whereof, l have hereunto set 25 my hand.

CHARLES FELL. 

